Thank you for your replies, especially millie!
My wife is actually spending more and more time with family and non JWs and less and less time with JWs and JW activities. "Breathing fresh air" and liking it, too. She doesn't know the word "fading", but to me it seems like she is maybe subconsciously doing just that. My concern is about what I read on here, some user experiences. That some JWs leave the Org but the org never leaves them. I fear that deep down she will always think that they are actually right, at least about the more fundamental stuff. I see my job is to show her that leaving the Org doesn't mean you have to leave Jehovah and Jesus, too. And that if the GB is wrong about some small things, or the elder/cong handles some local stuff badly, how can you still be sure that they are right about the important stuff and the big things.